MESON Chess Problem Database

Problem Display
PID: 265278 (8/8/7B/2K2Qr1/3Np2r/2N2n2/1p2R2p/1bk3bR w - - 0 1)

Bottacchi, Antonio

Comm., L'Italia Scacchistica, 1948

8/8/7B/2K2Qr1/3Np2r/2N2n2/1p2R2p/1bk3bR

#2

7 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Rc2#
    • 1...Bc2
      • 2.Rxc2#
    • 1...Sd2
      • 2.Re1#
    • 1...Se5
      • 2.Qf1#
    • 1...e3
      • 2.Sb3#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Sb3#
      • 1...Sxd4
        • 2.Qf1#
      • 1...Ba2
        • 2.Rc2#
      • 1...Bc2
        • 2.Rxc2#
      • 1...Sd2
        • 2.Re1#
      • 1...Rxh6+!
    • 1.Bxg5+?
      • 1...Sd2
        • 2.Bxd2#
        • 2.Re1#
        • 2.Qf1#
      • 1...Sxg5
        • 2.Qf1#
      • 1...e3
        • 2.Sb3#
        • 2.Qxb1#
      • 1...Rf4!
  • Keys
    • 1.Kb4!
      • threat
        • 2.Sb3#
      • 1...Sxd4
        • 2.Qf1#
      • 1...Ba2
        • 2.Rc2#
      • 1...Bc2
        • 2.Rxc2#
      • 1...Sd2
        • 2.Re1#
      • 1...e3
        • 2.Qxb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::R1(B)
    • B(a);N_GUARD::R1(B),XB(a)
    • S(f);N_GUARD,N_SPINR(i),SBLOCK::R(B)
    • S(f);N_PINQ(F)::QAR(F)
    • P(g);N_PINS(D),N_SPINR(i)::S(D)
  • Tries
    • Try
      • K(E);N_SPINQ(F),N_SPINS(D),S_FLIGHT
      • Threat
        • S(D)
      • Vars
        • S(f);OGATE,XS(D)::QAR(F)
        • B(a);N_GUARD::R1(B)
        • B(a);N_GUARD::R1(B),XB(a)
        • S(f);N_GUARD,N_SPINR(i),SBLOCK::R(B)
      • Refutation
        • R(h);CHECK,N_SPINR(i),XB(G)
    • Try
      • B(G);CHECK,N_SPINQ(F),XR(i)
      • Vars
        • S(f);OGATE,XB(G)::QAR(F)
      • Refutation
        • R(h);P_SPINR(h)
  • Actual
    • K(E);N_SPINQ(F),N_SPINS(D),S_FLIGHT
    • Threat
      • S(D)
    • Vars
      • S(f);OGATE,XS(D)::QAR(F)
      • B(a);N_GUARD::R1(B)
      • B(a);N_GUARD::R1(B),XB(a)
      • S(f);N_GUARD,N_SPINR(i),SBLOCK::R(B)
      • P(g);N_SPINR(i),OGATE,P_PINS(D)::QAR1(F),XB(a)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).